US4904090A - Temperature sensing arrangement - Google Patents
Temperature sensing arrangement Download PDFInfo
- Publication number
- US4904090A US4904090A US07/125,991 US12599187A US4904090A US 4904090 A US4904090 A US 4904090A US 12599187 A US12599187 A US 12599187A US 4904090 A US4904090 A US 4904090A
- Authority
- US
- United States
- Prior art keywords
- temperature
- housing
- sensor
- sensing arrangement
- temperature sensing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005855 radiation Effects 0.000 claims abstract description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000006096 absorbing agent Substances 0.000 abstract description 4
- 239000004065 semiconductor Substances 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910001006 Constantan Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 229910001179 chromel Inorganic materials 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
- F25B21/04—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect reversible
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/06—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity
- G01J5/061—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity by controlling the temperature of the apparatus or parts thereof, e.g. using cooling means or thermostats
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/06—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity
- G01J5/064—Ambient temperature sensor; Housing temperature sensor; Constructional details thereof
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/06—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity
- G01J5/068—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity by controlling parameters other than temperature
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/27—Control of temperature characterised by the use of electric means with sensing element responsive to radiation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/06—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity
- G01J5/061—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity by controlling the temperature of the apparatus or parts thereof, e.g. using cooling means or thermostats
- G01J2005/062—Peltier
Definitions
- This invention relates to temperature sensing arrangements and it relates especially, though not exclusively, to such arrangements for use in circumstances where a relatively uniform temperature prevails over a relatively large area.
- Sensing arrangements in accordance with the invention are particularly suitable for use in the domestic environment, and may be used as part of an automated environmental control system.
- a temperature sensing arrangement including a temperature sensor device incorporating, in a housing, a reference sensor monitoring the temperature of the housing and a further sensor monitoring the temperature of a zone remote from the housing, control means for controlling the temperature of said housing, a circuit arrangement responsive to the sensors and effective to drive said control means in a sense tending to cause the temperature of said housing to approach that of said zone and means for monitoring the temperature of said housing, thereby to derive an indication of the temperature of the zone.
- the sensing arrangement can be mounted in a location which is convenient for cabling (for example, on a ceiling) and yet can monitor accurately the temperature of a remote zone (say a region of wall) to which it would be inconvenient to connect cables.
- a remote zone say a region of wall
- suitable optical and/or mechanical scanning means are incorporated in the arrangment, a single arrangement can be used to monitor the temperature of several zones.
- the arrangement comprises means to vary the drive operation of the circuit arrangement in accordance with the operation of the sensors.
- the arrangement comprises means to render the heating and cooling cycles approximately equal in duration.
- means to monitor the duration of the heating cycle and the cooling cycle and means to vary the heating and/or cooling current in response to the cycle-monitor means.
- the housing may comprise a silicon windows, and/or the control means may comprise a Peltier heater/cooler device.
- FIG. 1 shows a sensor device for use in an arrangement in accordance with one example of the invention
- FIG. 2 shows a schematic layout of an arrangement utilising the device of FIG. 1,
- FIG. 3 shows a circuit arrangment for use with the device of FIG. 1,
- FIG. 4 shows another sensor device for use in the present invention
- FIG. 5 shows a circuit arrangement for use with the device of FIG. 4,
- FIG. 6 is a schematic cross-section of another sensor device embodying the present invention.
- a temperature sensor device is incorporated within a housing 1 which may, for example, be circular or rectangular in plan.
- the housing 1 has a window 2 through which infra-red radiation can enter and the window is preferably formed of silicon, though a metallic mesh or grid can be used if desired.
- a semiconductor fabrication consisting of a p-type film 4 and an n-type film 5 on an oxide film 6 provided on the support structure. Respective contacts 7, 8 are made to the semiconductor fabrication in conventional manner and connections 9, 10 are made from these contacts to respective output pins 11, 12 again as is conventional.
- the base of the housing is closed by a header 13 which provides a base for the support structure 3.
- the semiconductor fabrication together with the relevant contacts provide a reference "cold” junction 14 and a sensing "hot” junction 15, the latter being covered with a black absorber 16.
- the "hot” junction 15 can be colder than the "cold” junction 14, depending on whether the local ambient is higher or lower than the average room temperature.
- Junction 14 is rendered responsive to the temperature of the housing 1
- junction 15 is responsive to the temperature of the housing and also the temperature of a remote zone from which infra-red radiation can enter the housing 1 via window 2.
- the inside of the housing 1 is preferably blackened, as indicated at 17.
- the window ensures that the air within the housing is at the same temperature as the housing, as it would affect the temperature of the junction which receives the external radiation. If the sensor were in a locally high ambient temperature, a metallic mesh would be less effective than, say, a silicon window in keeping the enclosed air at the same temperature as the housing. Secondly, it reduces the effect of sunlight and also tungsten lights, if used, on the sensed "average" temperature. To this end silicon or germanium windows, for example, cut out wavelengths below about 1 micron to 2 microns. It is however also possible to use other materials for the window.
- a Peltier heater/cooler device 18 Attached to the header 13 is a Peltier heater/cooler device 18, having a heat sink 18a and associated power leads 19, 20, for controlling the temperature of the housing 1. It is preferable to surround the housing 1 with thermal insulation in order to reduce the demands on the Peltier device.
- the temperature of the housing 1 is monitored by any convenient form of electricaltemperature sensor indicated schematically as 101.
- the window 2 in the housing 1 will admit to the black absorber 16 associated with the "hot" junction 15, infra-red radiation from a zone on a wall 21 which is assumed to be at a temperature T 2 .
- T 2 the effective temperature
- the final sensor configuration might be such that a 360° view of the room is obtained so as to obtain a better average temperature and so as to be less effected by localised ⁇ hot ⁇ spots e.g. human bodies, heat generating equipment etc.
- the "cold" junction 14 initially senses this temperature and thus an output indicative of the difference T 2 -T 1 can be derived from the sensor device constituted by the junctions 14, 15. This output is utilised, by way of a feedback amplifier 22, to drive the Peltier device 18 in a sense tending to cause T 1 to approach T 2 .
- the temperature of the housing 1 is monitored by the aforementioned electrical temperature sensor to provide an indication of the temperature T 2 .
- FIG. 3 shows an electrical circuit arrangement for use with the device shown in FIG. 1.
- the "hot” and “cold” sensors of the device 1 are coupled to the positive and negative inputs respectively of a high gain chopper amplifier 23.
- the differential temperature signal so developed is applied, by way of a further amplification and stage 103 and comparator stages 104, 105, to a Peltier device drive circuit 107 including a four transistor switch arrangment 24 designed to control the supply of current to the Peltier device 25.
- Transistors 26 and 27 of the arrangement 24 are rendered conductive to cause the Peltier device 25 to heat the housing 1 (FIG. 1) and transistors 28 and 29 are rendered conductive to cool it.
- the circuit controlling the Peltier device can overcorrect.
- the circuit of FIG. 3 includes resistors 33 and 34; resistor 33 may be shorted out by transistor 32.
- resistor 33 may be shorted out by transistor 32.
- FIG. 4 shows an alternative sensor device, wherein like parts are labelled with like reference numerals with respect to FIG. 1, and FIG. 5 shows a circuit arrangement suitable for use with the device in FIG. 4 and with like parts labelled with like reference numerals with respect to FIG. 3.
- the device in FIG. 4 is surrounded by an insulative housing 50 having a window 2, preferably made of silicon. Inside the housing 50 is a suitable temperature sensor 51, such as a type LM35, embedded in a copper block 52 and having leads 53 to a suitable indicating means (not shown).
- a suitable temperature sensor 51 such as a type LM35, embedded in a copper block 52 and having leads 53 to a suitable indicating means (not shown).
- the device also includes a thermocouple including 1mm copper wires 54, 55, which are insulated from the block 52, by for example enamelling, but still in good thermal contact therewith. Connected across the two wires 54, 55 is a 1 thousandth of an inch thickness copper foil 56, which is blackened on the side facing the window 2 and is joined at one end to a 2 thousandth of an inch diameter constantan wire 57 and at the other end to a 2 thousandth of an inch diameter chromel wire 58, to provide "hot" junctions H and "cold" junctions C.
- the thermocouple also has leads 59.
- the block 52 is in contact with a Peltier device 18 having a heat sink 18a and leads 19, 20.
- a sensor embodying the present invention may utilize screen-printing techniques in its structure and the manufacture thereof.
- a housing 70 with a silicon window 71 has a "hot" junction comprising a thermocouple 72 printed onto a ceramic substrate 73 and over-coated with a black insulating layer 74.
- the "cold" junction comprises a thermocouple 75 printed in similar fashion on a ceramic substrate 76, but with a Peltier 77 cooler/heater and a platinum resistance thermometer 78 printed thereover, appropriate insulating layers 79 being provided.
- the thermocouples 72 and 75 are connected by thermal links 80 of an appropriate material.
- the sensor of FIG. 6 can be modified such as to form a planar structure consisting of a single sheet of ceramic with the "hot” and "cold” junctions at each end. Additionally or alternatively, thermopiles may be used in the junctions.
- circuits shown in FIGS. 3 and 5 are only examples and the actual circuit employed may need to be modified to suit the characteristics of the particular sensor device utilised. For example, the time constraints are likely to be shorter for a physically relatively small device, continuous control of the heating/cooling currents rather than stepping between discrete levels may be employed, and an alternative technique for equalising the heating and cooling cycle durations may be employed.
- the sensor device can be mounted in any suitable location convenient for cabling, such as into a ceiling. If the device is mounted into a ceiling rose above, for example, a tungsten lamp, the local ambient temperature would be much higher than the average room temperture.
- the invention is based on Prevost's law of exchanges, whereby if the room and furniture temperatures are roughly the same and if the sensor housing is at the same temperature as the viewed wall (slightly modified by the temperature of the other surfaces in the room) then the output of the differential temperature sensor would be zero.
Abstract
Description
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8628610 | 1986-11-29 | ||
GB868628610A GB8628610D0 (en) | 1986-11-29 | 1986-11-29 | Temperature sensing arrangement |
Publications (1)
Publication Number | Publication Date |
---|---|
US4904090A true US4904090A (en) | 1990-02-27 |
Family
ID=10608201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/125,991 Expired - Fee Related US4904090A (en) | 1986-11-29 | 1987-11-27 | Temperature sensing arrangement |
Country Status (3)
Country | Link |
---|---|
US (1) | US4904090A (en) |
EP (1) | EP0270299A3 (en) |
GB (1) | GB8628610D0 (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0699880A2 (en) * | 1992-08-13 | 1996-03-06 | Bodenseewerk Gerätetechnik GmbH | Refrigeration system for cooling a sensor situated in the jacket void of a Dewar vessel |
US5957582A (en) * | 1997-10-20 | 1999-09-28 | Output Technology Corporation | Thermal sensor assembly |
US6076962A (en) * | 1999-02-09 | 2000-06-20 | Chen; Chao-Wang | Infrared probe of thermometer |
WO2000041239A1 (en) * | 1998-12-31 | 2000-07-13 | Howard Hsu | Chip package including peltier cooling |
EP1081475A2 (en) * | 1999-09-03 | 2001-03-07 | Braun GmbH | Infrared detector with temperature stabilisation and infrared thermometer including such a detector |
WO2001061295A1 (en) * | 2000-02-17 | 2001-08-23 | Kazuhito Sakano | Thermopile sensor, and method of measuring temperature with infrared radiation |
WO2001088495A1 (en) * | 2000-04-20 | 2001-11-22 | Kazuhito Sakano | Infrared thermometer and method of measuring temperature with infrared thermometer |
US6375350B1 (en) * | 2000-08-08 | 2002-04-23 | Quantum Logic Corp | Range pyrometer |
US20040218659A1 (en) * | 2003-04-30 | 2004-11-04 | Wellman William H. | Sensor system and method for sensing in an elevated-temperature environment, with protection against external heating |
US20060060236A1 (en) * | 2004-09-23 | 2006-03-23 | Kim Tae-Yong | System for controlling temperature of a secondary battery module |
US20080291635A1 (en) * | 2007-05-25 | 2008-11-27 | Sharp Kabushiki Kaisha | Heat dissipative structure, optical pickup apparatus, and optical recording/reproducing apparatus |
US20110122913A1 (en) * | 2009-11-23 | 2011-05-26 | Mettler-Toledo Ag | Thermal analysis device |
US20110315882A1 (en) * | 2010-06-25 | 2011-12-29 | Hon Hai Precision Industry Co., Ltd. | Infrared detector |
US20140219308A1 (en) * | 2012-12-31 | 2014-08-07 | Flir Systems, Inc. | Devices and methods for determining vacuum pressure levels |
WO2017154773A1 (en) * | 2016-03-09 | 2017-09-14 | 浜松ホトニクス株式会社 | Light detection device |
US10677656B2 (en) | 2012-12-31 | 2020-06-09 | Flir Systems, Inc. | Devices and methods for infrared reference pixels |
WO2021161862A1 (en) * | 2020-02-12 | 2021-08-19 | 株式会社堀場製作所 | Temperature meter |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4867574A (en) * | 1988-05-19 | 1989-09-19 | Jenkofsky John J | Ultra high speed infrared temperature measuring device |
US4900162A (en) * | 1989-03-20 | 1990-02-13 | Ivac Corporation | Infrared thermometry system and method |
JP2560560B2 (en) * | 1991-04-22 | 1996-12-04 | 株式会社島津製作所 | Method for manufacturing thermal photodetector and its support |
GB2266771B (en) * | 1992-04-22 | 1995-11-01 | Robert Lendrum Fyfe | Heatflow balancing thermometer |
DE4421065A1 (en) * | 1994-06-16 | 1995-12-21 | Raytek Sensorik Gmbh | Temperature measuring device |
US6015457A (en) * | 1997-04-21 | 2000-01-18 | Alliedsignal Inc. | Stable inorganic polymers |
WO1999001726A1 (en) * | 1997-07-03 | 1999-01-14 | Koninklijke Philips Electronics N.V. | Device for measuring the temperature of an object by means of a thermocouple infrared sensor, and thermal electrical appliance including such a device |
FR2870708B1 (en) * | 2004-05-25 | 2007-02-23 | Realtrace Sarl | DEVICE FOR REMOTELY MEASURING THE TEMPERATURE OF AN OBJECT OR LIVING BODY |
DE102011009128B4 (en) * | 2011-01-21 | 2015-11-19 | Excelitas Technologies Singapore Pte Ltd | Heater for a sensor, heated radiation sensor, radiation detection method |
US8662169B2 (en) * | 2011-04-07 | 2014-03-04 | Baker Hughes Incorporated | Borehole metal member bonding system and method |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4066365A (en) * | 1976-05-28 | 1978-01-03 | The Perkin-Elmer Corporation | Temperature control apparatus |
US4078179A (en) * | 1976-07-30 | 1978-03-07 | Telatemp Corporation | Movable instrument with light emitting position indicator |
US4106690A (en) * | 1974-11-07 | 1978-08-15 | Rochester Instrument Systems Limited | Optimum start controller |
GB2067292A (en) * | 1980-01-09 | 1981-07-22 | Findlay Irvine Ltd | Ice warning indicator |
US4301682A (en) * | 1979-08-24 | 1981-11-24 | Everest Charles E | Infrared thermometer in making stress-degree measurements for irrigation purposes |
US4345455A (en) * | 1980-03-28 | 1982-08-24 | Eg&G, Inc. | Dew point hygrometer with continuous balancing system |
US4456919A (en) * | 1980-12-30 | 1984-06-26 | Horiba, Ltd. | Thermopile type detector with temperature sensor for cold junction |
US4456390A (en) * | 1981-10-26 | 1984-06-26 | Wahl Instruments, Inc. | Noncontact temperature measuring device |
US4472594A (en) * | 1981-09-23 | 1984-09-18 | Horiba, Ltd. | Method of increasing the sensitivity of thermopile |
US4583814A (en) * | 1983-07-20 | 1986-04-22 | Gec Avionics Limited | Infra-red optical systems |
US4722612A (en) * | 1985-09-04 | 1988-02-02 | Wahl Instruments, Inc. | Infrared thermometers for minimizing errors associated with ambient temperature transients |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3321974A (en) * | 1965-10-23 | 1967-05-30 | Cornell Aeronautical Labor Inc | Surface temperature measuring device |
GB2121181B (en) * | 1982-05-20 | 1986-04-03 | Laszlo Urmenyi | Non-contact sensing of surface temperature of objects |
DE3445677A1 (en) * | 1984-12-14 | 1986-06-19 | Uranit GmbH, 5170 Jülich | RADIATION MEASURING PROBE FOR CONTACTLESS, EMISSION DEGREE-INDEPENDENT TEMPERATURE MEASUREMENT |
-
1986
- 1986-11-29 GB GB868628610A patent/GB8628610D0/en active Pending
-
1987
- 1987-11-25 EP EP87310391A patent/EP0270299A3/en not_active Withdrawn
- 1987-11-27 US US07/125,991 patent/US4904090A/en not_active Expired - Fee Related
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4106690A (en) * | 1974-11-07 | 1978-08-15 | Rochester Instrument Systems Limited | Optimum start controller |
US4066365A (en) * | 1976-05-28 | 1978-01-03 | The Perkin-Elmer Corporation | Temperature control apparatus |
US4078179A (en) * | 1976-07-30 | 1978-03-07 | Telatemp Corporation | Movable instrument with light emitting position indicator |
US4301682A (en) * | 1979-08-24 | 1981-11-24 | Everest Charles E | Infrared thermometer in making stress-degree measurements for irrigation purposes |
GB2067292A (en) * | 1980-01-09 | 1981-07-22 | Findlay Irvine Ltd | Ice warning indicator |
US4345455A (en) * | 1980-03-28 | 1982-08-24 | Eg&G, Inc. | Dew point hygrometer with continuous balancing system |
US4456919A (en) * | 1980-12-30 | 1984-06-26 | Horiba, Ltd. | Thermopile type detector with temperature sensor for cold junction |
US4472594A (en) * | 1981-09-23 | 1984-09-18 | Horiba, Ltd. | Method of increasing the sensitivity of thermopile |
US4456390A (en) * | 1981-10-26 | 1984-06-26 | Wahl Instruments, Inc. | Noncontact temperature measuring device |
US4583814A (en) * | 1983-07-20 | 1986-04-22 | Gec Avionics Limited | Infra-red optical systems |
US4722612A (en) * | 1985-09-04 | 1988-02-02 | Wahl Instruments, Inc. | Infrared thermometers for minimizing errors associated with ambient temperature transients |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0699880A2 (en) * | 1992-08-13 | 1996-03-06 | Bodenseewerk Gerätetechnik GmbH | Refrigeration system for cooling a sensor situated in the jacket void of a Dewar vessel |
EP0699880A3 (en) * | 1992-08-13 | 1996-09-11 | Bodenseewerk Geraetetech | Refrigeration system for cooling a sensor situated in the jacket void of a Dewar vessel |
US5957582A (en) * | 1997-10-20 | 1999-09-28 | Output Technology Corporation | Thermal sensor assembly |
US6024487A (en) * | 1997-10-20 | 2000-02-15 | Output Technology Corporation | Thermal sensor assembly |
WO2000041239A1 (en) * | 1998-12-31 | 2000-07-13 | Howard Hsu | Chip package including peltier cooling |
US6076962A (en) * | 1999-02-09 | 2000-06-20 | Chen; Chao-Wang | Infrared probe of thermometer |
US6626835B1 (en) | 1999-09-03 | 2003-09-30 | Braun Gmbh | Infrared sensor stabilizable in temperature, and infrared thermometer with a sensor of this type |
JP2001116621A (en) * | 1999-09-03 | 2001-04-27 | Braun Gmbh | Infrared sensor capable of stabilization of temperature and infrared thermometer having the same type sensor |
EP1081475A3 (en) * | 1999-09-03 | 2003-02-12 | Braun GmbH | Infrared detector with temperature stabilisation and infrared thermometer including such a detector |
EP1081475A2 (en) * | 1999-09-03 | 2001-03-07 | Braun GmbH | Infrared detector with temperature stabilisation and infrared thermometer including such a detector |
JP4619499B2 (en) * | 1999-09-03 | 2011-01-26 | ブラウン ゲーエムベーハー | Infrared sensor capable of stabilizing temperature and infrared thermometer having this type of sensor |
WO2001061295A1 (en) * | 2000-02-17 | 2001-08-23 | Kazuhito Sakano | Thermopile sensor, and method of measuring temperature with infrared radiation |
WO2001088495A1 (en) * | 2000-04-20 | 2001-11-22 | Kazuhito Sakano | Infrared thermometer and method of measuring temperature with infrared thermometer |
US6375350B1 (en) * | 2000-08-08 | 2002-04-23 | Quantum Logic Corp | Range pyrometer |
US20040218659A1 (en) * | 2003-04-30 | 2004-11-04 | Wellman William H. | Sensor system and method for sensing in an elevated-temperature environment, with protection against external heating |
US6979119B2 (en) * | 2003-04-30 | 2005-12-27 | Raytheon Company | Sensor system and method for sensing in an elevated-temperature environment, with protection against external heating |
US8492642B2 (en) * | 2004-09-23 | 2013-07-23 | Samsung Sdi Co., Ltd. | System for controlling temperature of a secondary battery module |
US20060060236A1 (en) * | 2004-09-23 | 2006-03-23 | Kim Tae-Yong | System for controlling temperature of a secondary battery module |
US20080291635A1 (en) * | 2007-05-25 | 2008-11-27 | Sharp Kabushiki Kaisha | Heat dissipative structure, optical pickup apparatus, and optical recording/reproducing apparatus |
US8371746B2 (en) * | 2009-11-23 | 2013-02-12 | Mettler-Toledo Ag | Thermal analysis device |
US20110122913A1 (en) * | 2009-11-23 | 2011-05-26 | Mettler-Toledo Ag | Thermal analysis device |
US9857230B2 (en) * | 2010-06-25 | 2018-01-02 | Tsinghua University | Infrared detector |
US20110315882A1 (en) * | 2010-06-25 | 2011-12-29 | Hon Hai Precision Industry Co., Ltd. | Infrared detector |
US20150060769A1 (en) * | 2010-06-25 | 2015-03-05 | Tsinghua University | Infrared detector |
US9541453B2 (en) * | 2010-06-25 | 2017-01-10 | Tsinghua University | Infrared detector |
US20140219308A1 (en) * | 2012-12-31 | 2014-08-07 | Flir Systems, Inc. | Devices and methods for determining vacuum pressure levels |
US9606016B2 (en) * | 2012-12-31 | 2017-03-28 | Flir Systems, Inc. | Devices and methods for determining vacuum pressure levels |
US10677656B2 (en) | 2012-12-31 | 2020-06-09 | Flir Systems, Inc. | Devices and methods for infrared reference pixels |
WO2017154773A1 (en) * | 2016-03-09 | 2017-09-14 | 浜松ホトニクス株式会社 | Light detection device |
JP2017161336A (en) * | 2016-03-09 | 2017-09-14 | 浜松ホトニクス株式会社 | Light detection device |
US11448553B2 (en) * | 2016-03-09 | 2022-09-20 | Hamamatsu Photonics K.K. | Light detection device |
WO2021161862A1 (en) * | 2020-02-12 | 2021-08-19 | 株式会社堀場製作所 | Temperature meter |
Also Published As
Publication number | Publication date |
---|---|
GB8628610D0 (en) | 1987-01-07 |
EP0270299A3 (en) | 1990-01-10 |
EP0270299A2 (en) | 1988-06-08 |
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